API Reference: Vulkan Pipeline State¶

This is the API reference for the functions, classes, and enums in the renderdoc module which represents the underlying interface that the UI is built on top of. For more high-level information and instructions on using the python API, see Python API.

Sections

Pipeline and Bindings
Vertex Input
Shader
Tessellation
Transform Feedback
Rasterizer
Multisampling
Blending
Depth/Stencil State
Renderpass and Framebuffer
Image States
Conditional Rendering

class renderdoc.VKState¶

The full current Vulkan pipeline state.

colorBlend¶

The color blending configuration.

Type: VKColorBlendState

compute¶

The currently bound compute pipeline, if any.

Type: VKPipeline

computeShader¶

The compute shader stage.

Type: VKShader

conditionalRendering¶

The current conditional rendering state.

Type: VKConditionalRendering

currentPass¶

The current renderpass, subpass and framebuffer.

Type: VKCurrentPass

depthStencil¶

The depth-stencil state.

Type: VKDepthStencil

fragmentShader¶

The fragment shader stage.

Type: VKShader

geometryShader¶

The geometry shader stage.

Type: VKShader

graphics¶

The currently bound graphics pipeline, if any.

Type: VKPipeline

images¶

The resource states for the currently live resources.

Type: List[VKImageData]

inputAssembly¶

The input assembly stage.

Type: VKInputAssembly

meshShader¶

The mesh shader stage.

Type: VKShader

multisample¶

The multisampling configuration.

Type: VKMultiSample

pushconsts¶

The raw push constant data.

Type: bytes

rasterizer¶

The rasterization configuration.

Type: VKRasterizer

shaderMessages¶

The shader messages retrieved for this action.

Type: List[ShaderMessage]

taskShader¶

The task shader stage.

Type: VKShader

tessControlShader¶

The tessellation control shader stage.

Type: VKShader

tessEvalShader¶

The tessellation evaluation shader stage.

Type: VKShader

tessellation¶

The tessellation stage.

Type: VKTessellation

transformFeedback¶

The transform feedback stage.

Type: VKTransformFeedback

vertexInput¶

The vertex input stage.

Type: VKVertexInput

vertexShader¶

The vertex shader stage.

Type: VKShader

viewportScissor¶

The viewport setup.

Type: VKViewState

Pipeline and Bindings ¶

class renderdoc.VKPipeline¶

Describes the object and descriptor set bindings of a Vulkan pipeline object.

descriptorSets¶

The bound descriptor sets.

Type: List[VKDescriptorSet]

flags¶: The flags used to create the pipeline object.

pipelineComputeLayoutResourceId¶: The ResourceId of the compute pipeline layout object.

pipelineFragmentLayoutResourceId¶

The ResourceId of the fragment pipeline layout object.

When not using pipeline libraries, this will be identical to pipelinePreRastLayoutResourceId.

pipelinePreRastLayoutResourceId¶

The ResourceId of the pre-rasterization pipeline layout object.

When not using pipeline libraries, this will be identical to pipelineFragmentLayoutResourceId.

pipelineResourceId¶: The ResourceId of the pipeline object.

class renderdoc.VKDescriptorSet¶

The contents of a descriptor set.

descriptorSetResourceId¶: The ResourceId of the descriptor set object.

dynamicOffsets¶

A list of dynamic offsets to be applied to specific bindings, on top of the contents of their descriptors.

Note

The returned values from PipeState.GetConstantBuffer() already have these offsets applied.

Type: List[VKDynamicOffset]

layoutResourceId¶: The ResourceId of the descriptor set layout that matches this set.

pushDescriptor¶: Indicates if this is a virtual ‘push’ descriptor set.

class renderdoc.VKDynamicOffset¶

A dynamic offset applied to a single descriptor access.

descriptorByteOffset¶

The offset in bytes to the descriptor in the storage.

Type: int

dynamicBufferByteOffset¶

The dynamic offset to apply to the buffer in bytes.

Type: int

Vertex Input ¶

class renderdoc.VKInputAssembly¶

Describes the vulkan input assembly configuration.

indexBuffer¶

The index buffer binding.

Type: VKIndexBuffer

primitiveRestartEnable¶: True if primitive restart is enabled for strip primitives.

topology¶

The current primitive topology.

Type: Topology

class renderdoc.VKIndexBuffer¶

Describes the Vulkan index buffer binding.

byteOffset¶: The byte offset from the start of the buffer to the beginning of the index data.

byteStride¶: The number of bytes for each index in the index buffer. Typically 2 or 4 bytes but it can be 0 if no index buffer is bound.

resourceId¶: The ResourceId of the index buffer.

class renderdoc.VKVertexInput¶

Describes the fixed-function vertex input fetch setup.

attributes¶

The vertex attributes.

Type: List[VKVertexAttribute]

bindings¶

The vertex bindings.

Type: List[VKVertexBinding]

vertexBuffers¶

The vertex buffers.

Type: List[VKVertexBuffer]

class renderdoc.VKVertexAttribute¶

Describes the configuration of a single vertex attribute.

binding¶: The vertex binding where data will be sourced from.

byteOffset¶: The byte offset from the start of each vertex data in the binding to this attribute.

format¶

The format describing how the input element is interpreted.

Type: ResourceFormat

location¶: The location in the shader that is bound to this attribute.

class renderdoc.VKVertexBinding¶

Describes a vertex binding.

instanceDivisor¶

The instance rate divisor.

If this is 0 then every vertex gets the same value.

If it’s 1 then one element is read for each instance, and for N greater than 1 then N instances read the same element before advancing.

perInstance¶: True if the vertex data is instance-rate.

vertexBufferBinding¶: The vertex binding where data will be sourced from.

class renderdoc.VKVertexBuffer¶

Describes a single Vulkan vertex buffer binding.

byteOffset¶: The byte offset from the start of the buffer to the beginning of the vertex data.

byteSize¶: The size of the vertex buffer.

byteStride¶: The byte stride between the start of one set of vertex data and the next.

resourceId¶: The ResourceId of the buffer bound to this slot.

Shader ¶

class renderdoc.VKShader¶

Describes a Vulkan shader stage.

entryPoint¶: The name of the entry point in the shader module that is used.

pushConstantRangeByteOffset¶: The byte offset into the push constant data that is visible to this shader.

pushConstantRangeByteSize¶: The number of bytes in the push constant data that is visible to this shader.

reflection¶

The reflection data for this shader.

Type: ShaderReflection

requiredSubgroupSize¶: The required subgroup size specified for this shader at pipeline creation time.

resourceId¶: The ResourceId of the shader module object.

shaderObject¶: Whether the shader is a shader object or shader module.

specializationData¶

The provided specialization constant data. Shader constants store the byte offset into this buffer as their byteOffset. This data includes the applied specialization constants over the top of the default values, so it is safe to read any constant from here and get the correct current value.

Type: bytes

specializationIds¶

The specialization constant ID for each entry in the specialization constant block of reflection info. This corresponds to the constantID in VkSpecializationMapEntry, while the offset and size into specializationData can be obtained from the reflection info.

Type: List[int]

stage¶: A ShaderStage identifying which stage this shader is bound to.

Tessellation ¶

class renderdoc.VKTessellation¶

Describes the state of the fixed-function tessellator.

domainOriginUpperLeft¶: True if the tessellation domain origin is upper-left, False if lower-left.

numControlPoints¶: The number of control points in each input patch.

Transform Feedback ¶

class renderdoc.VKTransformFeedback¶

Describes the state of the fixed-function transform feedback.

buffers¶

The bound transform feedback buffers.

Type: List[VKXFBBuffer]

rasterizedStream¶

Which stream-out stream is being used for rasterization.

Type: int

class renderdoc.VKXFBBuffer¶

Describes a single transform feedback binding.

active¶: A flag indicating if this buffer is active or not.

bufferResourceId¶: The ResourceId of the bound data buffer.

byteOffset¶: The offset in bytes to the start of the data in the bufferResourceId.

byteSize¶: The size in bytes of the data buffer.

counterBufferOffset¶: The offset in bytes to the counter in the counterBufferResourceId.

counterBufferResourceId¶: The ResourceId of the buffer storing the counter value (if set).

Rasterizer ¶

class renderdoc.VKViewportScissor¶

Describes a combined viewport and scissor region.

scissor¶

The scissor.

Type: Scissor

vp¶

The viewport.

Type: Viewport

class renderdoc.VKViewState¶

Describes the view state in the pipeline.

depthNegativeOneToOne¶: Whether depth clip range is set to [-1, 1] through VK_EXT_depth_clip_control.

discardRectangles¶

The discard rectangles, if enabled.

Type: List[VKRenderArea]

discardRectanglesExclusive¶

True if a fragment in any one of the discard rectangles fails the discard test, and a fragment in none of them passes.

False if a fragment in any one of the discard rectangles passes the discard test, and a fragment in none of them is discarded.

Note

A True value and an empty list of discardRectangles means the test is effectively disabled, since with no rectangles no fragment can be inside one.

viewportScissors¶

The bound viewports and scissors.

Type: List[VKViewportScissor]

class renderdoc.VKRasterizer¶

Describes the rasterizer state in the pipeline.

conservativeRasterization¶: The active conservative rasterization mode.

cullMode¶: The polygon CullMode.

depthBias¶: The fixed depth bias value to apply to z-values.

depthBiasClamp¶: The clamp value for calculated depth bias from depthBias and slopeScaledDepthBias

depthBiasEnable¶: Whether depth biasing is enabled.

depthClampEnable¶: True if pixels outside of the near and far depth planes should be clamped and to 0.0 to 1.0.

depthClipEnable¶: True if pixels outside of the near and far depth planes should be clipped.

Note

In Vulkan 1.0 this value was implicitly set to the opposite of depthClampEnable, but with later extensions & versions it can be set independently.

extraPrimitiveOverestimationSize¶

The extra size in pixels to increase primitives by during conservative rasterization, in the x and y directions in screen space.

See conservativeRasterizationMode

fillMode¶: The polygon FillMode.

frontCCW¶: True if counter-clockwise polygons are front-facing. False if clockwise polygons are front-facing.

lineRasterMode¶: The line rasterization mode.

lineStippleFactor¶: The line stipple factor, or 0 if line stipple is disabled.

lineStipplePattern¶: The line stipple bit-pattern.

lineWidth¶: The fixed line width in pixels.

pipelineShadingRate¶

The current pipeline fragment shading rate. This will always be 1x1 when a fragment shading rate has not been specified.

Type: Tuple[int,int]

provokingVertexFirst¶: Whether the provoking vertex is the first one (default behaviour).

rasterizerDiscardEnable¶: True if primitives should be discarded during rasterization.

shadingRateCombiners¶

The fragment shading rate combiners.

The combiners are applied as follows, according to the Vulkan spec:

intermediateRate = combiner[0] ( pipelineShadingRate, shaderExportedShadingRate ) finalRate = combiner[1] ( intermediateRate, imageBasedShadingRate )

Where the first input is from pipelineShadingRate and the second is the exported shading rate from the last pre-rasterization shader stage, which defaults to 1x1 if not exported.

The intermediate result is then used as the first input to the second combiner, together with the shading rate sampled from the fragment shading rate attachment.

Type: Tuple[ShadingRateCombiner,ShadingRateCombiner]

slopeScaledDepthBias¶: The slope-scaled depth bias value to apply to z-values.

Multisampling ¶

class renderdoc.VKMultiSample¶

Describes the multisampling state in the pipeline.

minSampleShading¶: The minimum sample shading rate.

rasterSamples¶: How many samples to use when rasterizing.

sampleLocations¶

The custom sample locations configuration.

Type: VKSampleLocations

sampleMask¶: A mask that generated samples should be masked with using bitwise AND.

sampleShadingEnable¶: True if rendering should happen at sample-rate frequency.

class renderdoc.VKSampleLocations¶

Describes state of custom sample locations in the pipeline.

customLocations¶

The custom sample locations. Only x and y are valid, z and w are set to 0.0.

If the list is empty then the standard sample pattern is in use.

Type: List[FloatVector]

gridHeight¶: The height in pixels of the region configured.

gridWidth¶: The width in pixels of the region configured.

Blending ¶

class renderdoc.VKColorBlendState¶

Describes the pipeline blending state.

alphaToCoverageEnable¶: True if alpha-to-coverage should be used when blending to an MSAA target.

alphaToOneEnable¶: True if alpha-to-one should be used when blending to an MSAA target.

blendFactor¶

The constant blend factor to use in blend equations.

Type: Tuple[float,float,float,float]

blends¶

The blend operations for each target.

Type: List[ColorBlend]

Depth/Stencil State ¶

class renderdoc.VKDepthStencil¶

Describes the pipeline depth-stencil state.

backFace¶

The stencil state for back-facing polygons.

Type: StencilFace

depthBoundsEnable¶: True if depth bounds tests should be applied.

depthFunction¶: The CompareFunction to use for testing depth values.

depthTestEnable¶: True if depth testing should be performed.

depthWriteEnable¶: True if depth values should be written to the depth target.

frontFace¶

The stencil state for front-facing polygons.

Type: StencilFace

maxDepthBounds¶: The far plane bounding value.

minDepthBounds¶: The near plane bounding value.

stencilTestEnable¶: True if stencil operations should be performed.

Renderpass and Framebuffer ¶

class renderdoc.VKCurrentPass¶

Describes the current pass instance at the current time.

colorFeedbackAllowed¶: If feedback loops are allowed on color attachments

depthFeedbackAllowed¶: If feedback loops are allowed on depth attachments

framebuffer¶

The framebuffer that is currently being used.

Type: VKFramebuffer

renderArea¶

The render area that is currently being rendered to.

Type: VKRenderArea

renderpass¶

The renderpass and subpass that is currently active.

Type: VKRenderPass

stencilFeedbackAllowed¶: If feedback loops are allowed on stencil attachments

class renderdoc.VKRenderPass¶

Describes the setup of a renderpass and subpasses.

AttachmentUnused¶: Alias for VK_ATTACHMENT_UNUSED, for use by the UI to know when a value in colorAttachmentLocations or colorAttachmentInputIndices is mapped to VK_ATTACHMENT_UNUSED.

colorAttachmentInputIndices¶

The color index->input index mapping set up by dynamic rendering local read.

Type: List[int]

colorAttachmentLocations¶

The color index->location mapping set up by dynamic rendering local read.

Type: List[int]

colorAttachments¶

The color attachments for the current subpass, as indices into the framebuffer attachments.

Type: List[int]

depthInputAttachmentIndex¶: Depth input attachment index if explicit (dynamic rendering).

depthstencilAttachment¶

An index into the framebuffer attachments for the depth-stencil attachment.

If there is no depth-stencil attachment, this index is -1.

depthstencilResolveAttachment¶

An index into the framebuffer attachments for the depth-stencil resolve attachment.

If there is no depth-stencil resolve attachment, this index is -1.

dynamic¶: Whether or not dynamic rendering is in use (no render pass or framebuffer objects).

feedbackLoop¶: Whether or not there is a potential feedback loop.

fragmentDensityAttachment¶

An index into the framebuffer attachments for the fragment density attachment.

If there is no fragment density attachment, this index is -1.

Note

Only one at most of fragmentDensityAttachment and shadingRateAttachment will be set.

fragmentDensityOffsets¶

If VK_QCOM_fragment_density_map_offset is enabled, contains a list of offsets applied to the fragment density map during rendering.

If the list is empty, fdm_offset is disabled and rendering is as normal.

Type: List[Offset]

inputAttachments¶

The input attachments for the current subpass, as indices into the framebuffer attachments.

Type: List[int]

isDepthInputAttachmentIndexImplicit¶: Whether or not depth input attachment index is implicit (dynamic rendering).

isStencilInputAttachmentIndexImplicit¶: Whether or not stencil input attachment index is implicit (dynamic rendering).

multiviews¶

If multiview is enabled, contains a list of view indices to be broadcast to during rendering.

If the list is empty, multiview is disabled and rendering is as normal.

Type: List[int]

resolveAttachments¶

The resolve attachments for the current subpass, as indices into the framebuffer attachments.

Type: List[int]

resourceId¶: The ResourceId of the render pass.

shadingRateAttachment¶

An index into the framebuffer attachments for the fragment shading rate attachment.

If there is no fragment shading rate attachment, this index is -1.

Note

Only one at most of fragmentDensityAttachment and shadingRateAttachment will be set.

shadingRateTexelSize¶

The size of the framebuffer region represented by each texel in shadingRateAttachment.

For example if this is (2,2) then every texel in the attachment gives the shading rate of a 2x2 block in the framebuffer so the shading rate attachment is half the size of the other attachments in each dimension.

If no attachment is set in shadingRateAttachment this will be (1,1).

Type: Tuple[int,int]

stencilInputAttachmentIndex¶: Stencil input attachment index if explicit (dynamic rendering).

subpass¶: The index of the current active subpass.

suspended¶: Whether or not dynamic rendering is currently suspended.

tileOnlyMSAASampleCount¶

If VK_EXT_multisampled_render_to_single_sampled is enabled, contains the number of samples used to render this subpass.

If the subpass is not internally multisampled, tileOnlyMSAASampleCount is set to 0.

class renderdoc.VKFramebuffer¶

Describes a framebuffer object and its attachments.

attachments¶

The attachments of this framebuffer.

Type: List[Descriptor]

height¶: The height of this framebuffer in pixels.

layers¶: The number of layers in this framebuffer.

resourceId¶: The ResourceId of the framebuffer object.

width¶: The width of this framebuffer in pixels.

class renderdoc.VKRenderArea¶

Describes a render area in the current framebuffer.

height¶: The height of the render area.

width¶: The width of the render area.

x¶: The X co-ordinate of the render area.

y¶: The Y co-ordinate of the render area.

Image States ¶

class renderdoc.VKImageData¶

Contains the current layout of all subresources in the image.

layouts¶

The subresource regions in this resource.

Type: List[VKImageLayout]

resourceId¶: The ResourceId of the image.

class renderdoc.VKImageLayout¶

Contains the layout of a range of subresources in an image.

baseLayer¶: For 3D textures and texture arrays, the first slice used in the range.

baseMip¶: The first mip level used in the range.

name¶: The name of the current image state.

numLayer¶: For 3D textures and texture arrays, the number of array slices in the range.

numMip¶: The number of mip levels in the range.

Conditional Rendering ¶

class renderdoc.VKConditionalRendering¶

Contains the current conditional rendering state.

bufferId¶: The ResourceId of the buffer containing the predicate for conditional rendering.

byteOffset¶: The byte offset into buffer where the predicate is located.

isInverted¶: True if predicate result is inverted.

isPassing¶: True if the current predicate would render.